/**
 * KopsoxFramework
 * Copyright (C) 2010 Free Software Foundation, Inc. <http://fsf.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.kopsox.validation.impl.value;

import java.io.Serializable;

import org.kopsox.comm.message.ValueMessage;
import org.kopsox.comm.message.impl.ErrorMessageImpl;
import org.kopsox.data.Value;
import org.kopsox.general.priority.PriorityEnum;
import org.kopsox.general.type.ErrorTypeEnum;
import org.kopsox.general.type.Type;
import org.kopsox.general.type.ValueTypeEnum;
import org.kopsox.validation.impl.AbstractValidator;

/**
 * Checks if the digits of the value are in the defined Range
 * 
 * @author Konrad Renner - 12.10.2010
 *
 */
public class DigitsRangeValidator extends AbstractValidator {
	private static final long serialVersionUID = -8410570270255143682L;
	
	private final static String name = "DigitsRangeValidator";
	
	public DigitsRangeValidator() {
		setPriority(PriorityEnum.MEDIUM.getPriority());
	}
	
	/* (non-Javadoc)
	 * @see org.kopsox.validation.Validator#validateValueMessage(org.kopsox.comm.message.ValueMessage)
	 */
	@SuppressWarnings("boxing")
	@Override
	public boolean validateValueMessage(ValueMessage value) {
		super.errorMessages.clear();
		boolean ok = true;
		
		Value<Serializable> v = value.getMessageValue();
		
		if(v != null && v.getValue() != null && v.getValueDescriptor().getRangeOfDigitsFromValue() != null){
			
			//Just for Numbers with Digits
			if(isTypeNumberWithDigits(v.getType())) {
				String strrepr = v.getValue().toString();
				//Get the digits
				int indexOfPoint = strrepr.indexOf('.');
				Integer val = 0;
				if(indexOfPoint > 0) {
					val = strrepr.substring(indexOfPoint+1).length();
				}
				
				boolean inRange = v.getValueDescriptor().getRangeOfDigitsFromValue().isValueWithinTheLimits(val);
				
				if(!inRange) {
					ok = false;
					ErrorMessageImpl message = new ErrorMessageImpl(PriorityEnum.HIGHER.getPriority(), ErrorTypeEnum.DIGITSOUTOFRANGE);
					message.setMessageSender(this);
					message.setNameOfErrorSource(v.getValueDescriptor().getName());
					super.errorMessages.add(message);
				}
			}
			
		}
		
		return ok;
	}
	
	public String toString() {
		return name;
	}
	
	private final boolean isTypeNumberWithDigits(Type type) {
		return ValueTypeEnum.BIGDECIMAL.equals(type) || ValueTypeEnum.DOUBLE.equals(type) || ValueTypeEnum.FLOAT.equals(type);
	}
}
